Laser photolysis techniques have been employed show that the quenching of the excited electronic states of 9,10-di-phenylanthracene involve an energy transfer mechanism resulting in generation of singlet oxygen from both the lowest singlet and triplet states of the hydrocarbon. Internal conversion from the excited singlet of the 9,10-diphenylanthracene is enhanced by oxygen as well. This process is attributed to formation of sterically hindered conformers. The temperature dependence of internal conversion of 9,10-diphenylanthracene was also examined.

中文翻译：

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9，10-二苯基蒽中¹ O _2的生成及内部转化机理

已采用激光光解技术表明，9，10-二苯基蒽的激发电子态的猝灭涉及能量转移机理，导致从烃的最低单重态和三重态产生单重态氧。由9，10-二苯基蒽的激发单线态的内部转化也通过氧而增强。该过程归因于空间受阻构象异构体的形成。还检查了9,10-二苯基蒽的内部转化率的温度依赖性。